How much does it cost to fix Biasi error code lock-out signal lamp?

Typical repair cost for the Biasi lock-out signal lamp fault is £100-350 including labour.

lock-out signal lamp High

Biasi lock-out signal lamp Fault Code

Q: What does the Biasi lock-out signal lamp fault code mean?

Your boiler has stopped working for safety reasons and needs to be manually restarted to attempt to fire up again.

Also written as LOCKOUTSIGNALLAMP — same fault.

The Biasi lock-out signal lamp fault code means: your boiler has stopped working for safety reasons and needs to be manually restarted to attempt to fire up again.. It appears on 1 Biasi model in our database.

Technical description: Electronic control/ignition p.c.b. can lock the functioning of the boiler (lock state). The lock is signalled by the lighting of the lock-out signal lamp and the device can be reset only by using the boiler reset button.

Typical repair cost £100-350 (including labour)

DIY fix possible

Locate the reset button (often marked with an 'R' or a flame symbol) on the boiler control panel.Press and hold the reset button for 2 to 5 seconds.Wait for the boiler to attempt the ignition sequence; if it fails to start after three attempts, call a Gas Safe engineer.

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Biasi models that show the lock-out signal lamp fault code

Click a model for the full fault code list and model-specific repair notes.

Riva Compact HE M96a Repair: £100-350

Source

Biasi lock-out signal lamp fault code information on this page is sourced and cross-checked against the official Biasi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026